Our toilet bubbles and double flushes after every use. Is this something to be concerned about? Should we call Rotor Roter? :eek:

Doubles flushes? Not sure what this means. If the water in the bowl bubbles when you flush I'd suspect your vent is blocked. Roto Rooter or a plumber would fix the problem if you can't get to it. You can try plunging several times but there is only a slim chance of improving your situation. It is free however so give it a try before you call the plumber.

Double flushing occurs when the volume of water being discharged into the bowl is so great that it siphons twice. As Bal pointed out, bubbles occur when there's a partial blockage in the drain. This could cause the discharge to siphon, hit the clog, bounce back, holding up the rest of the flush and siphon again. Have the toilet augered and snaked and if you still get a double flush lower the tank level. Good luck. Tom